Minecraft.sh

#!/bin/bash
# original author : Relliktsohg
# Huge thanks to Maine for his incremental backup
# Modified by bGeorge for use on the ATB Minecraft servers

. /lib/lsb/init-functions

#  Configuration
MC_PATH=/home/gaming/minecraft
SCREEN_NAME="mc"
MEMALOCMAX=3000
MEMALOCSTART=100
MC_JAR=minecraft_server.jar;
MC_LOCK=server.log.lck;
WORLD_NAME="world1"

WORLDS_TO_BACKUP="world1"
BKUP_PATH=/home/gaming/minecraft/backups
BKUP_DAYS_INCR=1
BKUP_DAYS_FULL=3

WORLDS_TO_CARTO="world1"
CARTO_PATH=/home/gaming/minecraft/mcmap
MAPS_PATH=/home/gaming/minecraft/cartographs
CARTO_DAYS_TO_KEEP=3

USAGE="Usage : minecraft < start | stop | restart | backup | backup-full | cartography-day | screen>"

ID=`which id`;
KILL=`which kill`;

# 	End of configuration

if [ -e $MC_PATH/server.log.lck ]
then
	#	ps -e | grep java | wc -l
	ONLINE=1
else 
	ONLINE=0
fi

display() {
	screen -R $SCREEN_NAME
}

start_minecraft() {
	log_action_begin_msg "Starting minecraft-server"

	# Make sure old minecraft isn't running because they fight for same ip:port
	#if [ -f $MC_PATH/$MC_LOCK ]; then
	#	log_action_end_msg 1	# Fail
	#	log_failure_msg "Lock file exists. (Is minecraft-server already running?)"
	#	return
	#fi

	# Check for existing screen session
	if [ ! "`screen -ls | grep $SCREEN_NAME | wc -l`" == "0" ]; then
		log_action_end_msg 1	# Fail
		log_failure_msg "Screen session exists. (Is minecraft-server already running?)"
		return
	fi

	# Allow full core dumps for debugging purposes
	ulimit -c unlimited

		#cd $MC_PATH; screen -m -d -S $SCREEN_NAME  nice -n 0 java -Xincgc -Xms${MEMALOC}M -Xmx${MEMALOC}M -Djava.net.preferIPv4Stack=true -jar $MC_JAR nogui
		cd $MC_PATH; screen -m -d -S $SCREEN_NAME  nice -n 0 java -Xms${MEMALOCSTART}M -Xmx${MEMALOCMAX}M -Djava.net.preferIPv4Stack=true -XX:+UseConcMarkSweepGC -XX:+UseParNewGC -XX:+CMSIncrementalPacing -XX:ParallelGCThreads=2 -XX:+AggressiveOpts -server -jar $MC_JAR nogui

	log_action_end_msg $?
}

stop_minecraft() {

	log_action_begin_msg "Stopping minecraft-server (nicely)"
	# Verify session exists
	if [ "`screen -ls | grep $SCREEN_NAME | wc -l`" == "0" ]; then
		log_action_end_msg 1    # Fail
		log_failure_msg "Screen session not found. (Is minecraft-server running?)"
		if [ ! "$FORCE" == "TRUE" ]; then
			return
		fi
	else	# Screen reports a session..
		SCREEN_PID=`screen -ls | grep $SCREEN_NAME | cut -f2 | cut -d. -f1`;
		screen -S $SCREEN_NAME -p 0 -X stuff $'say Shutdown requested by console.\n' &>/dev/null
		screen -S $SCREEN_NAME -p 0 -X stuff $'save-all\n' &>/dev/null; sleep 15
		screen -S $SCREEN_NAME -p 0 -X stuff $'stop\n' &>/dev/null; RET=$?; sleep 15
		log_action_end_msg $RET
		if [ ! "$FORCE" == "TRUE" ]; then
			return
		fi
	fi

	if [ "$FORCE" == "TRUE" ]; then
		log_action_begin_msg "Stopping minecraft-server (forced)"
		# Use the PID returned by screen, if possible
		if [ -h /proc/${SCREEN_PID-UNSET}/exe ]; then
			$KILL -TERM $SCREEN_PID; sleep 1	# Try to be nice
			$KILL -KILL $SCREEN_PID &>/dev/null	# Use more force
		fi
		# Brute force killing
		OTHER_PIDS=`ps ax | grep java | grep $MC_JAR | grep -v grep | cut -d' ' -f2`
		if [ -n "$OTHER_PIDS" ]; then
			$KILL -TERM $OTHER_PIDS; sleep 1	# Try to be nice
			$KILL -KILL $OTHER_PIDS &>/dev/null	# Use more force
		fi

		# Remove the lock file
		if [ -f $MC_PATH/$MC_LOCK ]; then
			rm -f $MC_PATH/$MC_LOCK
		fi
		log_action_end_msg 0	# Success
	fi

}

if [ $# -gt 0 ]
then
	case $1 in

	#################################################################

	"start")
		start_minecraft

		;;

	#################################################################
    "stop")
		stop_minecraft
		;;

	#################################################################
	
	"screen")
		screen -r $SCREEN_NAME

		;;

	#################################################################
    "restart")
		stop_minecraft
		log_action_begin_msg "Sleeping"
		sleep 20
		log_action_end_msg $?
		start_minecraft
		;;
		
	#################################################################
	"backup")

		mkdir -p $BKUP_PATH
        

        echo "Server running, warning players : backup in 10s."
        screen -S $SCREEN_NAME -p 0 -X stuff "`printf "say Backing up the map in 10s\r"`"; sleep 10
        screen -S $SCREEN_NAME -p 0 -X stuff "`printf "say Now backing up the map...\r"`"
        echo "Issuing save-all command, wait 5s..."
        screen -S $SCREEN_NAME -p 0 -X stuff "`printf "save-all\r"`"; sleep 5
        echo "Issuing save-off command..."
        screen -S $SCREEN_NAME -p 0 -X stuff "`printf "save-off\r"`"; sleep 1
    
        for world in $WORLDS_TO_BACKUP
        do
            WORLD_NAME=$world
            BACKUP_FULL_LINK=${BKUP_PATH}/${WORLD_NAME}_full.tgz
            BACKUP_INCR_LINK=${BKUP_PATH}/${WORLD_NAME}_incr.tgz
            
            
                if [ -e $MC_PATH/$WORLD_NAME ]
                then  
                    cd $BKUP_PATH

                    DATE=$(date +%Y-%m-%d-%Hh%M)
                    FILENAME=$WORLD_NAME-$DATE
                    BACKUP_FILES=$BKUP_PATH/list.$DATE

                    if test `date +%H` -eq 0 -o ! -f $BACKUP_FULL_LINK
                    then
                        # Make full backup, and remove old incrementals
                        FILENAME=$FILENAME-full.tgz

                        # Remove incrementals older than $BKUP_DAYS_INCR
                        # Remove full archives older than $BKUP_DAYS_FULL
                        echo "Removing old files..."
                        find ./$WORLD_NAME-*-incr.tgz -type f -mtime +$BKUP_DAYS_INCR -print >> purgelist
                        find ./$WORLD_NAME-*-full.tgz -type f -mtime +$BKUP_DAYS_FULL -print >> purgelist
						echo `cat purgelist`
                        rm -f `cat purgelist`
                        rm -f purgelist

                        #find ./$WORLD_NAME-*-incr.tgz -type f -mtime +$BKUP_DAYS_INCR -exec rm {} \;
                        #find ./$WORLD_NAME-*-full.tgz -type f -mtime +$BKUP_DAYS_FULL -exec rm {} \;
                        
                        # Now make our full backup
                        pushd $MC_PATH
                        find $WORLD_NAME -type f -print > $BACKUP_FILES
                        tar -zcvf $BKUP_PATH/$FILENAME --files-from=$BACKUP_FILES
                        popd

                        rm -f $BACKUP_FULL_LINK $BACKUP_INCR_LINK
                        ln -s $FILENAME $BACKUP_FULL_LINK
                    else
                        # Make incremental backup
                        FILENAME=$FILENAME-incr.tgz

                        pushd $MC_PATH
                        find $WORLD_NAME -newer $BACKUP_FULL_LINK -type f -print > $BACKUP_FILES
                        tar -zcvf $BKUP_PATH/$FILENAME --files-from=$BACKUP_FILES
                        popd

                        rm -f $BACKUP_INCR_LINK
                        ln -s $FILENAME $BACKUP_INCR_LINK
                    fi

                    rm -f $BACKUP_FILES
                    

                    echo "Backup process is over."
                else
                    echo "The world \"$WORLD_NAME\" does not exist.";
                fi

            
        done
        

        echo "Issuing save-on command..."
        screen -S $SCREEN_NAME -p 0 -X stuff "`printf "save-on\r"`"; sleep 1
        screen -S $SCREEN_NAME -p 0 -X stuff "`printf "say Backup is done, have fun !\r"`"
  
        ;;
        
    ###############################################################################################
	
	
        
    "backup-full")

		mkdir -p $BKUP_PATH
        
        echo "Server running, warning players : backup in 10s."
        screen -S $SCREEN_NAME -p 0 -X stuff "`printf "say Backing up the map in 10s\r"`"; sleep 10
        screen -S $SCREEN_NAME -p 0 -X stuff "`printf "say Now backing up the map...\r"`"
        echo "Issuing save-all command, wait 5s..."
        screen -S $SCREEN_NAME -p 0 -X stuff "`printf "save-all\r"`"; sleep 5
        echo "Issuing save-off command..."
        screen -S $SCREEN_NAME -p 0 -X stuff "`printf "save-off\r"`"; sleep 1

        
        for world in $WORLDS_TO_BACKUP
        do
            WORLD_NAME=$world
            BACKUP_FULL_LINK=${BKUP_PATH}/${WORLD_NAME}_full.tgz
            BACKUP_INCR_LINK=${BKUP_PATH}/${WORLD_NAME}_incr.tgz
            
            
                    if [ -e $MC_PATH/$WORLD_NAME ]
                then
 
                    
                    cd $BKUP_PATH

                    DATE=$(date +%Y-%m-%d-%Hh%M)
                    FILENAME=$WORLD_NAME-$DATE
                    BACKUP_FILES=$BKUP_PATH/list.$DATE


                        # Make full backup, and remove old incrementals
                        FILENAME=$FILENAME-full.tgz

                        pushd $MC_PATH
                        find $WORLD_NAME -type f -print > $BACKUP_FILES
                        tar -zcvf $BKUP_PATH/$FILENAME --files-from=$BACKUP_FILES
                        popd

                        rm -f $BACKUP_FULL_LINK $BACKUP_INCR_LINK
                        ln -s $FILENAME $BACKUP_FULL_LINK


                    rm -f $BACKUP_FILES
                    

                    echo "Backup process is over."
                else
                    echo "The world \"$WORLD_NAME\" does not exist.";
                fi

            
        done
        

        echo "Issuing save-on command..."
        screen -S $SCREEN_NAME -p 0 -X stuff "`printf "save-on\r"`"; sleep 1
        screen -S $SCREEN_NAME -p 0 -X stuff "`printf "say Backup is done, have fun !\r"`"

  
        ;;
		
	#################################################################
	"backup-clean")

		mkdir -p $BKUP_PATH
		
    
        for world in $WORLDS_TO_BACKUP
        do
            WORLD_NAME=$world
            BACKUP_FULL_LINK=${BKUP_PATH}/${WORLD_NAME}_full.tgz
            BACKUP_INCR_LINK=${BKUP_PATH}/${WORLD_NAME}_incr.tgz
            
            
                if [ -e $MC_PATH/$WORLD_NAME ]
                then  
                    cd $BKUP_PATH

					# Remove incrementals older than $BKUP_DAYS_INCR
					# Remove full archives older than $BKUP_DAYS_FULL
					echo "Removing old files..."
					find ./$WORLD_NAME-*-incr.tgz -type f -mtime +$BKUP_DAYS_INCR -print >> purgelist
					find ./$WORLD_NAME-*-full.tgz -type f -mtime +$BKUP_DAYS_FULL -print >> purgelist
					echo `cat purgelist`
					rm -f `cat purgelist`
					rm -f purgelist
                    
                    echo "Old files removed."
                else
                    echo "The world \"$WORLD_NAME\" does not exist.";
                fi

            
        done  
        ;;
	
	#################################################################
	"cartography")
    

    echo "Issuing save-all command, wait 5s...";
    screen -S $SCREEN_NAME -p 0 -X stuff "`printf "save-all\r"`"; sleep 5
    echo "Issuing save-off command...";
    screen -S $SCREEN_NAME -p 0 -X stuff "`printf "save-off\r"`"; sleep 1
    screen -S $SCREEN_NAME -p 0 -X stuff "`printf "say Map cartography has begun.\r"`"

    
    if [ $# -gt 1 ]
    then
        WORLDS_TO_CARTO=$2
    fi
    
    echo "Cartographing worlds $WORLDS_TO_CARTO";
    
    for world in $WORLDS_TO_CARTO
    do
        WORLD_NAME=$world
		if [ -e $CARTO_PATH ]	
		then
			if [ -e $MC_PATH/$WORLD_NAME ]
			then

				mkdir -p $MAPS_PATH
				
				DATE=$(date +%d-%m-%Y-%Hh%M)
				FILENAME=$WORLD_NAME-map-$DATE
				cd $CARTO_PATH
				echo "Cartography in progress..."
				./mcmap -file $FILENAME.png -north -texture terrain.png -mem 1500 $MC_PATH/$WORLD_NAME/
				mv $FILENAME.png $MAPS_PATH
				#Write latest filename to file
				echo "$FILENAME" > $MAPS_PATH/$WORLD_NAME-day.txt
				#Create "latest" sym link
				rm -f $MAPS_PATH/$WORLD_NAME-latest.png
				ln -s $MAPS_PATH/$FILENAME.png $MAPS_PATH/$WORLD_NAME-latest.png
				#Create thumbnail
				#rm -f $MAPS_PATH/$WORLD_NAME-latest-thumbnail.png
				#convert $MAPS_PATH/$WORLD_NAME-latest.png -resize 600x600 $MAPS_PATH/$WORLD_NAME-latest-thumbnail.png
				echo "Cartography is done."
				
				cd $MAPS_PATH
				echo "Removing old files..."
				find ./$WORLD_NAME-map-*.png -type f -mtime +$CARTO_DAYS_TO_KEEP -print >> purgelist
				echo `cat purgelist`
				rm -f `cat purgelist`
				rm -f purgelist
				echo "Old files removed."
				
				cd $MC_PATH

			else
				echo "The world \"$WORLD_NAME\" does not exist.";
			fi
		else
			echo "The path to cartographier seems to be wrong."
		fi
        
        
      done
      

    echo "Issuing save-on command..."
    screen -S $SCREEN_NAME -p 0 -X stuff "`printf "save-on\r"`"; sleep 1
    screen -S $SCREEN_NAME -p 0 -X stuff "`printf "say Map cartography is done.\r"`"

      
     ;;

			
	#################################################################
	*)
		echo $USAGE;
	esac

else
	echo $USAGE;
fi
exit 0